CN116511010B - Ceramic coating for porous material and preparation and application methods thereof - Google Patents
Ceramic coating for porous material and preparation and application methods thereof Download PDFInfo
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- CN116511010B CN116511010B CN202310796772.XA CN202310796772A CN116511010B CN 116511010 B CN116511010 B CN 116511010B CN 202310796772 A CN202310796772 A CN 202310796772A CN 116511010 B CN116511010 B CN 116511010B
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- 239000011148 porous material Substances 0.000 title claims abstract description 41
- 238000005524 ceramic coating Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 192
- 239000011248 coating agent Substances 0.000 claims abstract description 191
- 239000000843 powder Substances 0.000 claims abstract description 134
- 239000010410 layer Substances 0.000 claims abstract description 107
- 239000002910 solid waste Substances 0.000 claims abstract description 74
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 46
- 239000002344 surface layer Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011521 glass Substances 0.000 claims abstract description 42
- 230000007704 transition Effects 0.000 claims abstract description 41
- 239000011449 brick Substances 0.000 claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 239000003822 epoxy resin Substances 0.000 claims abstract description 26
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 25
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 238000002425 crystallisation Methods 0.000 claims abstract description 8
- 230000008025 crystallization Effects 0.000 claims abstract description 8
- 229920002050 silicone resin Polymers 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 82
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 64
- 239000010703 silicon Substances 0.000 claims description 64
- 229910052710 silicon Inorganic materials 0.000 claims description 64
- 239000002270 dispersing agent Substances 0.000 claims description 41
- 239000000080 wetting agent Substances 0.000 claims description 41
- 239000002518 antifoaming agent Substances 0.000 claims description 35
- 238000005507 spraying Methods 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 28
- 238000000227 grinding Methods 0.000 claims description 25
- 239000013530 defoamer Substances 0.000 claims description 15
- 239000001038 titanium pigment Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 230000035515 penetration Effects 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 229920006015 heat resistant resin Polymers 0.000 claims description 2
- 239000011381 foam concrete Substances 0.000 abstract description 9
- 239000004567 concrete Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 229920001296 polysiloxane Polymers 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 26
- 235000010215 titanium dioxide Nutrition 0.000 description 23
- 239000003973 paint Substances 0.000 description 20
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 17
- 239000010445 mica Substances 0.000 description 17
- 229910052618 mica group Inorganic materials 0.000 description 17
- 230000008569 process Effects 0.000 description 15
- 239000002245 particle Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 10
- 238000005187 foaming Methods 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- 230000007547 defect Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 230000008595 infiltration Effects 0.000 description 8
- 238000001764 infiltration Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- -1 phenolic aldehyde Chemical class 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 1
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920000142 Sodium polycarboxylate Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
Abstract
The application relates to the technical field of building materials, and particularly discloses a ceramic coating for a porous material and a preparation and application method thereof, wherein the porous material is aerated concrete, foam concrete or light microporous concrete, and the ceramic coating comprises a transition layer coating, a leveling layer coating and a surface layer coating which are sequentially coated from inside to outside; the transition layer coating comprises one of an epoxy resin coating, an organosilicon coating and a penetrating crystallization coating; the leveling layer coating comprises temperature resistant resin, solid waste glass powder, solid waste brick powder, slag powder, titanium dioxide, leveling layer auxiliary agent and water; the surface layer coating comprises inorganic silicone resin, organic silicone emulsion, pigment and filler, surface layer auxiliary agent and water. The ceramic coating with the multi-coating structure for the porous material can play a role in waterproof and reinforcing, can penetrate into the porous material, reduces shrinkage of a base material, reduces water absorption, improves the strength of the porous material, improves the high-temperature resistance of the porous material, and improves the external decorative effect of the porous material.
Description
Technical Field
The application relates to the technical field of building materials, in particular to a ceramic coating for a porous material and a preparation and application method thereof.
Background
Along with the increasing demand of people on building energy conservation, the building enclosure heat insulation material receives more and more attention, and porous inorganic materials such as aerated concrete, foam concrete, light microporous concrete and the like are widely applied to the building enclosure heat insulation material with excellent heat insulation performance and fireproof performance, and the application range of the building enclosure heat insulation material comprises wall filling materials, partition boards, cladding boards and the like. However, such materials are generally relatively low in hardness and generally do not have a decorative function, or can achieve a decorative effect through a complex structure, and common forms include a multi-layer sandwich composite wallboard (i.e. a sandwich board), a surface adhesive decorative layer, and the like.
The water-based ceramic coating is prepared from siloxane monomers, inorganic high-temperature-resistant pigment and filler, inorganic nano particles and the like by a Sol-Gel (Sol-Gel) method, has texture and performance similar to those of ceramics after solidification, has the characteristics of high hardness, high weather resistance, high temperature resistance, corrosion resistance, flame retardance, environmental protection and the like, and can be applied to solving the problems of low hardness, poor decorative effect and the like of porous materials. However, most of the traditional ceramic coating is bi-component or multi-component, curing is carried out for 4-8 hours by a curing machine before the ceramic coating is used, energy is consumed, the dry film thickness is generally below 40 mu m, and construction is inconvenient.
In view of this, the present application has been made.
Disclosure of Invention
The application aims to provide the ceramic coating for the porous material, which has the advantages of no need of curing, energy consumption and inconvenient construction, energy conservation, construction efficiency improvement, high-quality utilization of solid waste resources by adding glass powder, brick powder, slag powder and the like as main fillers in construction waste and industrial waste, and great expansion of the application range of the ceramic coating.
The application is realized by the following technical scheme:
the ceramic coating is a multi-coating structural coating and comprises a transition layer coating, a leveling layer coating and a surface layer coating which are sequentially coated from inside to outside;
the transition layer coating comprises one of an epoxy resin coating, an organosilicon coating and a penetrating crystallization coating, the viscosity of the transition layer coating is not higher than 20 mPa.s, and the penetrating depth is not lower than 1.5 cm;
the leveling layer coating comprises temperature resistant resin, solid waste glass powder, solid waste brick powder, slag powder, titanium dioxide, leveling layer auxiliary agent and water;
the surface layer coating comprises inorganic silicon resin, organic silicon emulsion, pigment and filler, surface layer auxiliary agent and water.
The ceramic coating with the multi-coating structure for the porous material is adopted, and the transition layer coating adopts one of the high-permeability epoxy resin coating, the high-permeability organic silicon coating and the permeable crystallization coating, so that the ceramic coating has the waterproof and reinforcing effects, can permeate into the porous material, reduces the shrinkage of a base material, reduces the water absorption rate and improves the strength of the porous material; the leveling layer coating adopts temperature-resistant resin as a main component, and can resist the high temperature of 120-150 ℃ after being completely dried, so that the high temperature resistance of the porous material is improved, and in addition, the high-quality utilization of solid waste resources is realized by adding solid waste glass powder, solid waste brick powder, slag and the like in construction waste and industrial waste as main fillers; finally, by arranging the surface coating, the external decorative effect of the porous material can be improved, and the decoration process is greatly simplified.
Further, the leveling layer coating comprises the following components in parts by weight: 20-45 parts of heat-resistant resin, 5-25 parts of solid waste glass powder, 5-10 parts of solid waste brick powder, 5-10 parts of slag powder, 10-15 parts of titanium dioxide, 3-5 parts of leveling layer auxiliary agent and 0-10 parts of water.
Further, the temperature-resistant resin is one or more of solvent-free epoxy resin, aqueous hydroxy acrylic resin and organic silicon resin.
Further, the solid waste glass powder is prepared by screening, cleaning, grinding and screening the removed building exterior wall glass, and the particle size is 5-30 mu m.
Further, the solid waste brick powder is prepared by screening, cleaning, drying, grinding and screening the removed construction waste, and the particle size is 5-30 mu m.
Further, the slag powder is one or two of volcanic slag powder and zeolite powder, and the grain size is 5-30 mu m.
Furthermore, the waste brick powder and the slag powder are subjected to waterproof treatment.
Further, the leveling aid includes one or more of a dispersant, a wetting agent, an anti-settling agent, a pH adjuster, a leveling agent, a defoamer, and a film forming aid.
Further, the surface coating comprises the following components in parts by weight: 35-50 parts of inorganic silicon resin, 10-15 parts of organic silicon emulsion, 20-50 parts of pigment and filler, 3-5 parts of surface layer auxiliary agent and 5-10 parts of water.
Furthermore, the organic silicon emulsion has solid content of more than 40% and curing temperature of 120-150 ℃.
Further, the pigment and filler comprises one or more of titanium white powder, solid waste glass powder, whisker silicon, talcum powder, mica powder, kaolin and barite powder. The solid waste glass powder is prepared by screening, cleaning, grinding and sieving the removed building exterior wall glass, and the particle size is 5-30 mu m.
Further, the surface layer auxiliary agent comprises one or more of dispersing agent, wetting agent, anti-settling agent, pH regulator, leveling agent, defoaming agent and film forming auxiliary agent.
The application also provides a preparation method of the ceramic coating for the porous material, which comprises the following steps: weighing solid waste glass powder, slag powder, solid waste brick powder, titanium pigment, water, temperature-resistant resin, dispersing agent, wetting agent, anti-settling agent and 1/2 defoamer according to the proportion, placing the solid waste glass powder, slag powder, solid waste brick powder, titanium pigment, water, temperature-resistant resin, dispersing agent, wetting agent and 1/2 defoamer into a container, stirring and dispersing at high speed, and grinding the dispersed mixture; and finally, pouring the leveling agent, the film-forming auxiliary agent and the residual 1/2 defoamer with corresponding mass into the ground mixture, and continuously stirring uniformly at a low speed to obtain the leveling layer coating.
Further, the rotating speed of the high-speed stirring dispersion is 800-1500 r/min, and the time is 0.5-2 h; the grinding time is 0.5-2 h, and the fineness after grinding is not more than 30 mu m; the rotating speed of the low-speed stirring is 200-500 r/min, and the time is 15-30 min.
Further, the preparation method of the surface layer coating comprises the following steps: weighing pigment and filler, water, dispersing agent, wetting agent, anti-settling agent and defoaming agent according to the proportion, putting into a container, grinding and dispersing to obtain color paste, wherein the fineness of the color paste is not more than 20 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the leveling agent and the film forming auxiliary agent into color paste, and uniformly stirring at a rotating speed of 200-500 r/min to obtain the surface layer coating.
Further, the fineness of the color paste is not more than 20 mu m.
The application also provides an application method of the ceramic coating for the porous material, which comprises the following steps: firstly spraying a transition layer coating on the surface of the porous material, then spraying a leveling layer coating, then spraying a surface layer coating, and sequentially carrying out normal-temperature leveling, pre-curing and baking curing after the spraying is finished.
Further, the transition layer coating is coated with the leveling layer after being completely dried, the leveling layer is coated with the surface layer after being completely dried, the dry film thickness of the transition layer is 10-20 mu m, the dry film thickness of the leveling layer is not less than 500 mu m, and the dry film thickness of the surface layer is 25-50 mu m.
Further, the pre-curing temperature is 60-100 ℃ and the time is 5-15 min.
Further, the baking temperature is 120-150 ℃ and the baking time is 15-30 min.
Compared with the prior art, the application has the following advantages and beneficial effects:
1. the ceramic coating for the porous material provided by the embodiment of the application does not need curing before use, can save energy, is convenient for construction, and improves the construction efficiency;
2. the ceramic coating for the porous material solves the problems of low hardness, poor decorative effect and the like of the porous material through the design of the transition layer and the decorative surface layer, greatly expands the application range of the ceramic coating, improves the construction efficiency and has remarkable economic and social benefits;
3. the ceramic coating for the porous material provided by the embodiment of the application is added with glass powder, brick powder, slag powder and the like in construction waste and industrial waste as main fillers, so that the high-quality utilization of solid waste resources is realized.
Description of the embodiments
The present application will be described in further detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present application more apparent, and the description thereof is merely illustrative of the present application and not intended to be limiting.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the application. In other instances, well-known methods have not been described in detail in order to avoid obscuring the present application.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples.
Example 1
The embodiment of the application provides a preparation method and an application method of a ceramic coating for porous materials,
the transition layer coating is a high-permeability epoxy resin coating with the viscosity of 10 mPas and the penetration depth of 2.0 cm;
the high-permeability epoxy resin coating is a product obtained by modifying commercial epoxy resin E51 in a laboratory, and the modification method is as follows:
(1) According to the following steps: 3:2, uniformly mixing the epoxy resin E51, furfural and acetone to prepare a component A;
(2) According to 9:1, uniformly mixing a phenolic aldehyde modified amine curing agent and an epoxy curing agent DMP ⁃ to obtain a component B;
(3) And mixing and stirring the components A, B according to the mass ratio of 10:1 for 5min to obtain the high-permeability epoxy resin coating.
The leveling layer paint comprises the following components: according to the mass ratio, the solvent-free epoxy resin is 40%, the solid waste glass powder is 25%, the solid waste brick powder is 5%, the slag powder is 10%, the titanium pigment is 15%, the dispersing agent is 1%, the wetting agent is 0.5%, the anti-settling agent is 1%, the pH regulator is 0.5%, the leveling agent is 0.5%, the defoaming agent is 0.5% and the film forming additive is 1%;
the surface coating comprises the following components in percentage by mass: 35% of inorganic silicon resin, 15% of organic silicon emulsion (solid content is 45% and curing temperature is 140 ℃), 10% of titanium pigment, 8% of solid waste glass powder, 7% of whisker silicon, 6% of mica powder, 5% of barite powder, 1% of dispersing agent, 0.5% of wetting agent, 0.5% of anti-settling agent, 0.5% of pH regulator, 0.5% of leveling agent, 0.5% of defoaming agent, 0.5% of film forming additive and 10% of water.
The preparation method of the leveling layer paint comprises the following steps:
drying the slag powder and the solid waste brick powder in a baking oven at 100 ℃ for 4h, taking out, placing the dried and cooled slag powder, the solid waste brick powder, solvent-free epoxy resin, the solid waste glass powder, titanium dioxide, a dispersing agent, a wetting agent, an anti-settling agent, a pH regulator and a 1/2 defoamer in a container, dispersing at a high speed of 1500 r/min for 1h, and grinding for 1h to 20 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 300 r/min for 15min to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 20 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 15min at 300 r/min to obtain the surface layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, coating a surface layer coating, leveling at normal temperature for 30 min, pre-curing at 60 ℃ for 10 min, and baking at 130 ℃ for 30 min;
the dry film thickness of the composite coating after baking and curing is 540 μm, wherein the dry film thicknesses of the transition layer, the leveling layer and the surface layer are 15 μm, 500 μm and 25 μm respectively.
Example 2
The embodiment of the application provides a preparation method and an application method of ceramic coating for porous materials,
the transition layer coating is a high-permeability organosilicon coating with the viscosity of 20 mPas and the penetration depth of 1.8 cm; the high-permeability organosilicon coating is n-octyl triethoxy silicone resin coating;
the leveling layer paint comprises the following components in percentage by mass: 31% of water-based epoxy resin, 25% of solid waste glass powder, 10% of solid waste brick powder, 10% of slag powder, 12% of titanium pigment, 1% of dispersing agent, 0.5% of wetting agent, 0.5% of anti-settling agent, 0.2% of pH regulator, 0.5% of flatting agent, 0.3% of defoaming agent, 1% of film forming auxiliary agent and 8% of water;
the surface coating comprises the following components in percentage by mass: 40% of inorganic silicon resin, 12% of organic silicon emulsion, 10% of titanium dioxide, 8% of solid waste glass powder, 6% of whisker silicon, 8% of mica powder, 6% of barite powder, 1.5% of dispersing agent, 0.5% of wetting agent, 1% of anti-settling agent, 0.5% of pH regulator, 0.5% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 5% of water.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in an oven at 80 ℃ for 6 h, taking out, placing in a dryer for cooling to normal temperature, then placing the dried and cooled slag powder, solid waste brick powder, aqueous epoxy resin, solid waste glass powder, titanium pigment, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1000 r/min for 2h, and grinding for 0.5 h to fineness of 25 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 200 r/min for 15min to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 15 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 20 min at 250 r/min to obtain the surface layer coating.
The application object is aerated concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, coating a surface layer coating, leveling at normal temperature for 15min, pre-curing at 60 ℃ for 15min, and baking at 140 ℃ for 20 min;
the dry film thickness of the composite coating after baking and curing is 640 mu m, wherein the dry film thickness of the transition layer, the leveling layer and the surface layer is 10 mu m, 600 mu m and 30 mu m respectively.
Example 3
The embodiment of the application provides a preparation method and an application method of ceramic coating for porous materials,
the transition layer coating is an infiltration crystalline coating, the viscosity is 11 mPas, and the infiltration depth is 2.5 cm; the preparation method of the permeable crystallization coating comprises the following steps: according to 91:6:0.5:2.4: mixing sodium silicate (modulus 3.1-3.4), water, active catalyst (M1500), naOH and surfactant (FC-03) at a mass ratio of 0.1, and stirring at 400r/min for 30 min to obtain a permeable crystalline coating;
the leveling layer paint comprises the following components: according to the mass ratio, the water-based hydroxyl acrylic resin is 45%, the solid waste glass powder is 20%, the solid waste brick powder is 6%, the slag powder is 6%, the titanium pigment is 10%, the dispersing agent is 1%, the wetting agent is 0.3%, the anti-settling agent is 0.2%, the pH regulator is 0.2%, the leveling agent is 0.3%, the defoaming agent is 0.5%, the film forming auxiliary agent is 0.5% and the water is 10%;
the surface coating comprises the following components in percentage by mass: 50% of inorganic silicon resin, 10% of organic silicon emulsion, 8% of titanium dioxide, 6% of solid waste glass powder, 5% of whisker silicon, 5% of mica powder, 6% of barite powder, 1.2% of dispersing agent, 0.3% of wetting agent, 0.2% of anti-settling agent, 0.2% of pH regulator, 0.3% of leveling agent, 0.3% of defoaming agent, 0.5% of film forming auxiliary agent and 7% of water.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in a baking oven at 60 ℃ for 10 hours, taking out, placing the dried and cooled slag powder, solid waste brick powder, aqueous hydroxy acrylic resin, solid waste glass powder, titanium pigment, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1200 r/min for 2h, and grinding for 1 hour to 30 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 300 revolutions per minute for 15 minutes to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 18 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 20 min at 200 r/min to obtain the surface layer coating.
The application object is light microporous concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, coating a surface layer coating, leveling at normal temperature for 20 min, pre-curing at 60 ℃ for 10 min, and baking at 120 ℃ for 30 min;
the dry film thickness of the composite coating after baking and curing is 600 mu m, wherein the dry film thickness of the transition layer, the leveling layer and the surface layer is 10 mu m, 550 mu m and 40 mu m respectively.
Example 4
The embodiment of the application provides a preparation method and an application method of ceramic coating for porous materials,
the transition layer coating is an infiltration crystalline coating, the viscosity is 11 mPas, and the infiltration depth is 2.5 cm; the preparation method of the permeable crystallization coating comprises the following steps: according to 91:6:0.5:2.4: mixing sodium silicate (modulus 3.1-3.4), water, active catalyst (M1500), naOH and surfactant (FC-03) at a mass ratio of 0.1, and stirring at 400r/min for 30 min to obtain a permeable crystalline coating;
the leveling layer paint comprises the following components: according to the mass ratio, 40% of solvent-free epoxy resin, 25% of solid waste glass powder, 5% of solid waste brick powder, 10% of slag powder, 15% of titanium pigment, 2% of dispersing agent, 0.5% of wetting agent, 0.5% of anti-settling agent, 0.5% of pH regulator, 0.5% of flatting agent, 0.5% of defoaming agent and 0.5% of film forming auxiliary agent;
the surface coating comprises the following components in percentage by mass: 50% of inorganic silicon resin, 10% of organic silicon emulsion, 8% of titanium dioxide, 6% of solid waste glass powder, 5% of whisker silicon, 5% of mica powder, 6% of barite powder, 1% of dispersing agent, 0.3% of wetting agent, 0.2% of anti-settling agent, 0.2% of pH regulator, 0.3% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 7% of water.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in a baking oven at 90 ℃ for 6 h, taking out, placing in a dryer for cooling to normal temperature, then placing the dried and cooled slag powder, solid waste brick powder, solvent-free epoxy resin, solid waste glass powder, titanium dioxide, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1400 r/min for 1h, and grinding for 1h to fineness of 28 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 200 r/min for 20 min to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 16 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 15min at 200 r/min to obtain the surface layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, coating a surface layer coating, leveling at normal temperature for 15min, pre-curing at 80 ℃ for 5min, and baking at 150 ℃ for 20 min;
the dry film thickness of the composite coating after baking and curing is 550 mu m, wherein the dry film thickness of the transition layer, the leveling layer and the surface layer is 10 mu m, 500 mu m and 40 mu m respectively.
Comparative example 1
No transition layer is present.
The leveling layer paint comprises the following components: according to the mass ratio, 40% of solvent-free epoxy resin, 20% of heavy calcium powder, 5% of solid waste brick powder, 15% of slag powder, 15% of titanium pigment, 2% of dispersing agent, 0.5% of wetting agent, 0.5% of anti-settling agent, 0.5% of pH regulator, 0.5% of flatting agent, 0.5% of defoaming agent and 0.5% of film forming additive;
the surface coating comprises the following components in percentage by mass: 45% of inorganic silicon resin, 15% of organic silicon emulsion, 8% of titanium dioxide, 6% of solid waste glass powder, 5% of whisker silicon, 5% of mica powder, 6% of barite powder, 1% of dispersing agent, 0.3% of wetting agent, 0.2% of anti-settling agent, 0.2% of pH regulator, 0.3% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 7% of water.
The preparation method of the leveling layer paint comprises the following steps:
placing solvent-free epoxy resin, heavy calcium powder, solid waste brick powder, titanium pigment, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer into a container, dispersing at a high speed of 1h at 1500 r/min, and grinding to a fineness of 1h to 30 μm; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 200 r/min for 15min to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 18 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 15min at 250 r/min to obtain the surface layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
coating a leveling layer, coating a surface layer, leveling at normal temperature for 15min, pre-curing at 60 ℃ for 15min, and baking at 140 ℃ for 20 min;
the dry film thickness of the composite coating after baking and curing is 500 mu m.
Comparative example 2
The transition layer coating is an infiltration crystalline coating, the viscosity is 11 mPas, and the infiltration depth is 2.5 cm; the preparation method of the permeable crystallization coating comprises the following steps: according to 91:6:0.5:2.4: mixing sodium silicate (modulus 3.1-3.4), water, active catalyst (M1500), naOH and surfactant (FC-03) at a mass ratio of 0.1, and stirring at 400r/min for 30 min to obtain a permeable crystalline coating;
the leveling layer paint comprises the following components: according to the mass ratio, 30% of water-based epoxy resin, 25% of heavy calcium powder, 10% of solid waste brick powder, 15% of slag powder, 15% of titanium dioxide, 2% of dispersing agent, 0.5% of wetting agent, 1% of anti-settling agent, 0.2% of pH regulator, 0.3% of flatting agent, 0.5% of defoaming agent and 0.5% of film forming auxiliary agent;
the surface coating comprises the following components in percentage by mass: 40% of inorganic silicon resin, 20% of organic silicon emulsion, 12% of titanium dioxide, 10% of talcum powder, 5% of mica powder, 3% of barite powder, 2% of dispersing agent, 0.8% of wetting agent, 0.5% of anti-settling agent, 0.2% of pH regulator, 0.5% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 5% of water.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in an oven at 80 ℃ for 6 h, taking out, placing in a dryer for cooling to normal temperature, then placing the dried and cooled slag powder, solid waste brick powder, aqueous epoxy resin, heavy calcium powder, titanium pigment, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1000 r/min for 1.5 h, and grinding for 1h to fineness of 25 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 250 r/min for 15min to obtain the leveling layer coating.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, talcum powder, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 20 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 15min at 200 r/min to obtain the surface layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, coating a surface layer coating, leveling at normal temperature for 15min, and baking at 140 ℃ for 30 min;
the dry film thickness of the composite coating after baking and curing is 550 mu m.
Comparative example 3
No leveling layer is provided.
The transition layer coating is a high-permeability organosilicon coating with the viscosity of 20 mPas and the penetration depth of 1.8 cm; the high-permeability organosilicon coating is n-octyl triethoxy silicone resin coating;
the surface coating comprises the following components in percentage by mass: 40% of inorganic silicon resin, 12% of organic silicon emulsion, 10% of titanium dioxide, 8% of solid waste glass powder, 6% of whisker silicon, 8% of mica powder, 6% of barite powder, 2% of dispersing agent, 0.5% of wetting agent, 0.5% of anti-settling agent, 0.5% of pH regulator, 0.5% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 5% of water.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 18 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the flatting agent and the film forming auxiliary agent into the color paste, and stirring for 15min at 250 r/min to obtain the surface layer coating.
The application object is aerated concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a surface layer coating, leveling at normal temperature for 15min, pre-curing at 60 ℃ for 15min, and baking at 140 ℃ for 20 min;
the dry film thickness of the composite coating after baking and curing is 50 mu m.
Comparative example 4
No surface layer is provided.
The transition layer coating is an infiltration crystalline coating, the viscosity is 11 mPas, and the infiltration depth is 2.5 cm; the preparation method of the permeable crystallization coating comprises the following steps: according to 91:6:0.5:2.4: mixing sodium silicate (modulus 3.1-3.4), water, active catalyst (M1500), naOH and surfactant (FC-03) at a mass ratio of 0.1, and stirring at 400r/min for 30 min to obtain a permeable crystalline coating;
the leveling layer paint comprises the following components: according to the mass ratio, the solvent-free epoxy resin is 40%, the solid waste glass powder is 25%, the solid waste brick powder is 5%, the slag powder is 10%, the titanium pigment is 15%, the dispersing agent is 1%, the wetting agent is 1%, the anti-settling agent is 1%, the pH regulator is 0.2%, the leveling agent is 0.8%, the defoaming agent is 0.5% and the film forming auxiliary agent is 0.5%.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in a baking oven at 90 ℃ for 6 h, taking out, placing in a dryer for cooling to normal temperature, then placing the dried and cooled slag powder, solid waste brick powder, solvent-free epoxy resin, solid waste glass powder, titanium dioxide, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1400 r/min for 1h, and grinding for 1h to fineness of 28 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 200 r/min for 20 min to obtain the leveling layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating, coating a leveling layer coating, leveling at normal temperature for 15min, and curing at 80 ℃ for 30 min;
the dry film thickness of the composite coating after baking and curing is 500 mu m.
Comparative example 5
There is no transition layer and no surface layer.
The leveling layer paint comprises the following components: according to the mass ratio, the solvent-free epoxy resin is 40%, the solid waste glass powder is 25%, the solid waste brick powder is 5%, the slag powder is 10%, the titanium pigment is 15%, the dispersing agent is 1%, the wetting agent is 1%, the anti-settling agent is 1%, the pH regulator is 0.5%, the leveling agent is 0.5%, the defoaming agent is 0.5% and the film forming auxiliary agent is 0.5%.
The preparation method of the leveling layer paint comprises the following steps:
drying slag powder and solid waste brick powder in a baking oven at 90 ℃ for 6 h, taking out, placing in a dryer for cooling to normal temperature, then placing the dried and cooled slag powder, solid waste brick powder, solvent-free epoxy resin, solid waste glass powder, titanium dioxide, dispersing agent, wetting agent, anti-settling agent, pH regulator and 1/2 defoamer in a container, dispersing at a high speed of 1400 r/min for 1h, and grinding for 1h to fineness of 28 mu m; and finally pouring the leveling agent, the film-forming auxiliary agent and 1/2 of defoaming agent into the ground mixture, and continuously stirring at a low speed of 200 r/min for 20 min to obtain the leveling layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying a leveling layer paint, leveling at normal temperature for 15min, and curing at 80 ℃ for 30 min;
the dry film thickness of the coating after baking and curing is 500 μm.
Comparative example 6
There is no transition layer and no leveling layer.
The surface coating comprises the following components in percentage by mass: 40% of inorganic silicon resin, 12% of organic silicon emulsion, 10% of titanium dioxide, 8% of solid waste glass powder, 6% of whisker silicon, 8% of mica powder, 6% of barite powder, 2% of dispersing agent, 1% of wetting agent, 0.5% of anti-settling agent, 0.2% of pH regulator, 0.3% of flatting agent, 0.5% of defoaming agent, 0.5% of film forming auxiliary agent and 5% of water.
The preparation method of the surface coating comprises the following steps:
placing water, a dispersing agent, a wetting agent, an anti-settling agent, a defoaming agent, titanium dioxide, solid waste glass powder, whisker silicon, mica powder and barite powder into a container for grinding and dispersing to obtain color paste with the fineness of 18 mu m; and then pouring inorganic silicon resin, organic silicon emulsion, pH regulator, leveling agent, film forming auxiliary agent and the like into the color paste, and stirring for 15min at 250 r/min to obtain the surface layer coating.
The application object is foam concrete, and the coating spraying and curing process comprises the following steps:
spraying the surface layer paint together, leveling at normal temperature for 15min, pre-curing at 60 ℃ for 15min, and baking at 140 ℃ for 20 min;
the dry film thickness of the coating after baking and curing is 30 μm.
Comparative example 7
The coating of the transition layer is a high-permeability epoxy resin coating, the viscosity is 10 mPa.s, and the penetration depth is 2.0 cm;
the application object is aerated concrete, and the coating spraying and curing process comprises the following steps:
spraying a transition layer coating and curing at normal temperature;
the dry film thickness after curing of the coating was 30 μm.
The various auxiliaries used in the above examples and comparative examples are respectively: modified acrylate dispersant, polyoxyethylene nonylphenol ether wetting agent, sodium polycarboxylate anti-settling agent, mineral oil organic silicon defoamer, alkanolamine pH regulator, polyether modified polydimethylsiloxane flatting agent and propylene glycol butyl ether film forming auxiliary agent.
Hardness and adhesion of the conforming coatings prepared in the above examples and comparative examples were measured and the results are shown in table 1 below.
TABLE 1
| Sample of | Appearance of the coating | Hardness of pencil | Interfacial bond strength |
| Example 1 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 4H | 3.5 MPa |
| Example 2 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 6H | 3.9 MPa |
| Example 3 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 5H | 4.2 MPa |
| Example 4 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 5H | 4.0 Mpa |
| Comparative example 1 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 4H | 1.5MPa |
| Comparative example 2 | With dense vesicles on the surface | 2H | 3.2MPa |
| Comparative example 3 | The surface is rough and uneven, part of the surface is not covered by paint film, and part of the area is fallen off | 5H | 1.0MPa |
| Comparative example 4 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 3H | 3.5MPa |
| Comparative example 5 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | 2H | 1.5MPa |
| Comparative example 6 | Rough surface, severe cracking of the coating at the porous pores, and failure to form a continuous coating film | - | - |
| Comparative example 7 | Rough surface and cracking of the coating at the porous pores | - | - |
As can be seen from Table 1, examples 1-4 all exhibited good appearance, pencil hardness of 4H or more, and interfacial bond strength between the coating and the substrate was not less than 3.5MPa. The interfacial adhesion strength of the coating was reduced to 1.5MPa without the transition layer (comparative example 1); when the curing process has no pre-curing step (comparative example 2), the apparent effect of the coating is poor, small bubbles appear, and the hardness is reduced; when no leveling layer is arranged (comparative example 3), pores on the surface of the porous material cannot be covered, roughness is uneven, partial coating is separated due to uneven stress distribution, the appearance is seriously affected, and meanwhile, the bonding strength is reduced; when the top layer is not coated and the curing process has no pre-curing step (comparative example 4), the hardness of the coating is reduced to 3H, but the appearance and adhesion of the coating are not affected; when only the leveling layer is coated and the curing process has no pre-curing link (comparative example 5), the influence on the appearance is not great, but the hardness and the adhesive force are reduced to 2H and 1.5MPa respectively; when only the top or transition layer was applied (comparative examples 6 and 7), the coating appearance was too poor to test for hardness and adhesion.
Comparative example 4 has mechanical properties similar to those of examples, so that weather resistance of the two materials is compared, specifically, an artificial accelerated aging test is performed on example 1 and comparative example 4, and the results are shown in table 2.
TABLE 2
| Sample of | Coating appearance before xenon lamp aging test | Coating appearance after xenon lamp aging test |
| Example 1 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | Accelerated aging for 4000 hours, no chalking, no foaming, no cracking, no flaking and 90 percent of gloss retention |
| Comparative example 4 | The surface is smooth and flat, and the defects of flaking, crack, particle, foaming, shrinkage cavity and the like are avoided | Cracking after 500 hours of accelerated aging |
As can be seen from Table 2, since the topcoat paint of example 1 contains a large amount of organic resin and filler, it has a very important effect on improving the aging resistance of the coating, and comparative example 4 has no topcoat, and cannot meet the outdoor weather resistance requirement by only relying on the transition layer and the leveling layer.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. The ceramic coating for the porous material is characterized by being a multi-coating structural coating and comprising a transition layer coating, a leveling layer coating and a surface layer coating which are sequentially coated from inside to outside;
the viscosity of the transition layer coating is not higher than 20 mPa.s, and the penetration depth is not lower than 1.5 cm, and the transition layer coating comprises one of an epoxy resin coating, an organosilicon coating and a penetration crystallization coating;
the leveling layer coating comprises temperature resistant resin, solid waste glass powder, solid waste brick powder, slag powder, titanium dioxide, leveling layer auxiliary agent and water;
the surface layer coating comprises inorganic silicon resin, organic silicon emulsion, pigment and filler, surface layer auxiliary agent and water.
2. The ceramic coating for porous materials according to claim 1, wherein the leveling layer coating comprises the following components in parts by mass: 20-45 parts of heat-resistant resin, 5-25 parts of solid waste glass powder, 5-10 parts of solid waste brick powder, 5-10 parts of slag powder, 10-15 parts of titanium dioxide, 3-5 parts of leveling layer auxiliary agent and 0-10 parts of water.
3. The ceramic coating for porous materials according to claim 1, wherein the surface coating comprises the following components in parts by mass: 35-50 parts of inorganic silicon resin, 10-15 parts of organic silicon emulsion, 20-50 parts of pigment and filler, 3-5 parts of surface layer auxiliary agent and 5-10 parts of water.
4. The ceramic coating for porous materials according to claim 1, wherein the temperature-resistant resin is one or more of solvent-free epoxy resin, aqueous hydroxyacrylic resin and silicone resin.
5. The ceramic coating for porous materials according to claim 1, wherein the organic silicon emulsion has a solid content of more than 40% and a curing temperature of 120-150 ℃.
6. The ceramic coating for porous materials of claim 1, wherein the leveling and surfacing aids comprise one or more of dispersants, wetting agents, anti-settling agents, pH adjusters, leveling agents, defoamers, and film-forming aids.
7. A method of preparing a ceramic coating for porous materials as claimed in claim 1, wherein the method of preparing the screed coating comprises: weighing solid waste glass powder, slag powder, solid waste brick powder, titanium pigment, water, temperature-resistant resin, dispersing agent, wetting agent, anti-settling agent and 1/2 defoamer according to the proportion, putting into a container, stirring and dispersing at a rotating speed of 800-1500 r/min, and grinding the dispersed mixture; and finally, pouring the leveling agent, the film forming auxiliary agent and the residual 1/2 defoamer with corresponding mass into the ground mixture, and continuously stirring uniformly at the rotating speed of 200-500 r/min to obtain the leveling layer coating.
8. The method for preparing a ceramic coating according to claim 7, wherein the method for preparing the topcoat coating comprises the following steps: weighing pigment and filler, water, dispersing agent, wetting agent, anti-settling agent and defoaming agent according to the proportion, putting into a container, grinding and dispersing to obtain color paste, wherein the fineness of the color paste is not more than 20 mu m; and then pouring the inorganic silicon resin, the organic silicon emulsion, the pH regulator, the leveling agent and the film forming auxiliary agent into color paste, and uniformly stirring at a rotating speed of 200-500 r/min to obtain the surface layer coating.
9. A method of applying a ceramic coating for porous materials as claimed in claim 1, comprising the steps of: firstly spraying a transition layer coating on the surface of the porous material, then spraying a leveling layer coating, then spraying a surface layer coating, and sequentially carrying out normal-temperature leveling, pre-curing and baking curing after the spraying is finished.
10. The method for applying a ceramic coating according to claim 9, wherein the dry film thickness of the transition layer is 10-20 μm, the dry film thickness of the leveling layer is not less than 500 μm, and the dry film thickness of the surface layer is 25-50 μm.
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